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WHY HEAT TRANSFER ENHANCEMENT IS REQUIRED ?

» Economy» Limite Stoc! o" #$e%&» En'i(onment» De'e%o)ment

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HEAT TRANSFER ENHANCEMENT TECHNIQUES:

*. Acti'e met+o: In'o%'e& &ome e,te(n-% )oe( in)$t.

/. P-&&i'e met+o: No nee -ny e,te(n-% )oe( in)$t

0. 1om)o$n met+o: U&in2 3ot+ -cti'e -n )-&&i'e met+o&.

Active method:

S$("-ce 'i3(-tion

#%$i 'i3(-tion

In4ection

E%ect(o&t-tic 5e%&

Mec+-nic-% e6$i)mentIn$ce )$%&-tion

!"ive method:

Aiti'e& "o( %i6$i&

Aiti'e& "o( 2-&e&

Si(%78o e'ice&

T(e-te &$("-ce&

Ro$2+ &$("-ce&E,tene &$("-ce&

K-!-c S9 Be(2%e& AE9 M-yin2e( #9 Y$nc$ H9 He-t T(-n&"e( En+-ncement o" He-t E,c+-n2e(&7%: K%$e( -c-emic )$3%i&+e(& *;;;3


4/13

4

TY!ES OF CORRUGATED TUBES:Acco(in2 to co#c"ve$co#ve%?/@:

Acco(in2 to co&&'("ted )"tte?*@:

So"t H-( Dim)%e

$t-( con'e,

In-( conc-'e

?*@ Ret(ie'e "(om +tt):.+(&"$n!e.com)(o$ct&&+e%%7t$3e7+e-t7e,c+-n2e(&co(($2-te7t$3e7+e.-&), on /Ct+ J$%y /*.

?/@ H$-i7F+i H-n9 Bin27i Li9 #en271+en Li9 Y$7Ron2 He9 RST moe% "o( t$(3$%ent "%o -n +e-t t(-n&"e( mec+-ni&m in -n o$t-( con'e,

co(($2-te t$3e /*0


5/13

5

S)i(-%%y 1o(($2-te t$3e:

F-i S. K-(eem9 M.N. Mo+ J--"-(9 T+o%$in M. L-im9 S+-+(i( A3$%%-+9 Amm-( #. A3$% -+i9 He-t t(-n&"e( en+-ncement in to7&t-(t

&)i(-%%y co(($2-te t$3e /*


6/13

6

HOW TO ENHANCE HEAT TRANSFER IN CORRUGATED

TUBES ?

» D$e to i&t$(3-nce in %-min-( &$3 %-ye(.

» D$e to i&t$(3-nce in t+e(m-% 3o$n-(y %-ye(.» Re$ction in "o$%in2 )otenti-%.» S)i(-%%y co(($2-te t$3e& im)-(t& i""e(ent "%o (e2ime& :

*. S)i(-% in t+e co(e/. Ey& -t t+e )e(i)+e(y

Ret(ie'e "(om +tt):.+(&"$n!e.com)(o$ct&&+e%%7t$3e7+e-t7e,c+-n2e(&co(($2-te7t$3e7+e.-&), on /Ct+ J$%y /*.

http://www.hrsfunke.com/products/shell-tube-heat-exchangers/corrugated-tube-he.aspxhttp://www.hrsfunke.com/products/shell-tube-heat-exchangers/corrugated-tube-he.aspxhttp://www.hrsfunke.com/products/shell-tube-heat-exchangers/corrugated-tube-he.aspx


7/13

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EFFECT OF !ITCH * CORRUGATED HEIGHT ON

HEAT TRANSFER COEFFICENT:

1o(($2-te +ei2+t con&t-nt Pitc+ con&t-nt

H$-i7F+i H-n9 Bin27i Li9 #en271+en Li9 Y$7Ron2 He9 RST moe% "o( t$(3$%ent "%o -n +e-t t(-n&"e( mec+-ni&m in -n o$t-( con'e,

co(($2-te t$3e /*0


8/13

8

AD+ANTAGES:

» 1om)-ct in &ie.

» Ve(y %o m-inten-nce co&t&.» Loe( +e-t t(-n&"e( -(e-&.

» Le&& "o$%in2.

» Hi2+ (e&)on&e to 1IP.» ie c+oice o" M1.» No o3&t($ction to t+e "%o -(e- o" t+e t$3e.

Ret(ie'e "(om +tt):.+(&7+e-te,c+-n2e(&.comen(e&o$(ce&+e-t7t(-n&"e(7"$n-ment-%&77.-&), on /Ct+ J$%y /*

http://www.hrs-heatexchangers.com/en/resources/heat-transfer-fundamentals-04-05.aspxhttp://www.hrs-heatexchangers.com/en/resources/heat-transfer-fundamentals-04-05.aspxhttp://www.hrs-heatexchangers.com/en/resources/heat-transfer-fundamentals-04-05.aspx


9/13

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DISAD+ANTAGES:

» Ro$2+ne&& o" t+e t$3e& i& inc(e-&e&.» P(e&&$(e (o) i& inc(e-&e&.

» A co(($2-te t$3e i& %e&& e""ecti'e "o( Re >.

M. N N-(i9 T+o%$in M. L-im9 S+-+(i( A3$%%-9 F-i S. K-eem9 -n Amm-( #. A3$%-+9 1o(($2-tion P(o"i%e E""ect on He-t T(-n&"e( en+-ncement

o" %-min-( "%o Re2ion9 Inte(n-tion-% 1on"e(ence on Mec+-nic-% An In$&t(i-% En2inee(in29 K$-%- L$m)$(9 /*


10/13

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COM!ARISON:

!"&"mete& Co&&'("ted T',e

He"t

E%ch"#(e&

She-- * T',e

He"t E%ch"#(e&

!-"te He"t

E%ch"#(e&

He-t T(-n&"e( 1oe""icient Hi2+ Lo Hi2+

Hi2+ P(e&&$(e -))%ic-tion& Ye& Ye& No

Hi2+ Tem)e(-t$(e -))%ic-tion& Ye& Ye& No

To P+-&e A))%ic-tion E,ce%%ent Goo Poo(

A&e)tic P(oce&&in2 -))%ic-tion& Ye& Ye& No

P(o$ct B$(n7o$t No Ye& Ye&De- A(e-& &)ot& No No Ye&

P(o$ct& it+ So%i P-(tic%e& Ye& Ye& No

Ret(ie'e "(om +tt):.+(&"$n!e.com)(o$ct&&+e%%7t$3e7+e-t7e,c+-n2e(&co(($2-te7t$3e7+e.-&), on /C J$%y /*



11/13

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!"&"mete& Co&&'("tedT',e He"t

E%ch"#(e&

She-- * T',eHe"t E%ch"#(e&

!-"te He"tE%ch"#(e&

P(o$ct& it+ Hi2+ Vi&co&ity Ye& Limite No

P(o$ct Ho%7$) %o&&e& Lo Hi2+ Lo

Le-!-2e Ri&! Lo Lo Hi2+

'e(-%% Sie Lo Hi2+ Lo

Re&)on&e to 1%e-nin2 in P%-ce 1IP < Hi2+ Mei$m Lo

E,ten&ion o" Unit& Mo$%e& Ye& No Limite

E-&e o" In&)ection Hi2+ Mei$m Lo

M-inten-nce 1o&t S)-(e& 1o&t Lo Mei$m Hi2+

COM!ARISON:

Ret(ie'e "(om +tt):.+(&"$n!e.com)(o$ct&&+e%%7t$3e7+e-t7e,c+-n2e(&co(($2-te7t$3e7+e.-&), on /C J$%y /*



12/13

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THAN. YOU


13/13

13

HEAT TRANSFER ENHANCEMENT BY CORRUGATED TUBES

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